Question

a mountain climber is at 29035ft above sea level. a stone at the bottom of the dead sea is at 1349 ft below sea level what is the difference in elevation between the mountain climber and the stone

Answer 1

29,035 + 1,349 = 30,384

Answer 2

We need to keep in mind that the stone's height is negative 1349 instead of 1349.  Using this, we can subtract -1349 from 29035, giving us 30,384 feet.